Copyright	(c) 2008-2014 Twan van Laarhoven
License	BSD-style
Maintainer	twanvl@gmail.com
Stability	experimental
Portability	portable
Safe Haskell	Safe
Language	Haskell98

Debug.SimpleReflect.Expr

Contents

Construction
Evaluating

Description

Simple reflection of haskell expressions containing variables.

Synopsis

data Expr
class FromExpr a where
- fromExpr :: Expr -> a
var :: String -> Expr
fun :: FromExpr a => String -> a
data Associativity
- = InfixL
- | Infix
- | InfixR
op :: Associativity -> Int -> String -> Expr -> Expr -> Expr
expr :: Expr -> Expr
reduce :: Expr -> Expr
reduction :: Expr -> [Expr]

Construction

data Expr Source #

A reflected expression

Instances

Bounded Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods minBound :: Expr Source # maxBound :: Expr Source #
Enum Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods succ :: Expr -> Expr Source # pred :: Expr -> Expr Source # toEnum :: Int -> Expr Source # fromEnum :: Expr -> Int Source # enumFrom :: Expr -> [Expr] Source # enumFromThen :: Expr -> Expr -> [Expr] Source # enumFromTo :: Expr -> Expr -> [Expr] Source # enumFromThenTo :: Expr -> Expr -> Expr -> [Expr] Source #
Eq Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods (==) :: Expr -> Expr -> Bool Source # (/=) :: Expr -> Expr -> Bool Source #
Floating Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods pi :: Expr Source # exp :: Expr -> Expr Source # log :: Expr -> Expr Source # sqrt :: Expr -> Expr Source # (**) :: Expr -> Expr -> Expr Source # logBase :: Expr -> Expr -> Expr Source # sin :: Expr -> Expr Source # cos :: Expr -> Expr Source # tan :: Expr -> Expr Source # asin :: Expr -> Expr Source # acos :: Expr -> Expr Source # atan :: Expr -> Expr Source # sinh :: Expr -> Expr Source # cosh :: Expr -> Expr Source # tanh :: Expr -> Expr Source # asinh :: Expr -> Expr Source # acosh :: Expr -> Expr Source # atanh :: Expr -> Expr Source # log1p :: Expr -> Expr Source # expm1 :: Expr -> Expr Source # log1pexp :: Expr -> Expr Source # log1mexp :: Expr -> Expr Source #
Fractional Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods (/) :: Expr -> Expr -> Expr Source # recip :: Expr -> Expr Source # fromRational :: Rational -> Expr Source #
Integral Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods quot :: Expr -> Expr -> Expr Source # rem :: Expr -> Expr -> Expr Source # div :: Expr -> Expr -> Expr Source # mod :: Expr -> Expr -> Expr Source # quotRem :: Expr -> Expr -> (Expr, Expr) Source # divMod :: Expr -> Expr -> (Expr, Expr) Source # toInteger :: Expr -> Integer Source #
Num Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods (+) :: Expr -> Expr -> Expr Source # (-) :: Expr -> Expr -> Expr Source # (*) :: Expr -> Expr -> Expr Source # negate :: Expr -> Expr Source # abs :: Expr -> Expr Source # signum :: Expr -> Expr Source # fromInteger :: Integer -> Expr Source #
Ord Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods compare :: Expr -> Expr -> Ordering Source # (<) :: Expr -> Expr -> Bool Source # (<=) :: Expr -> Expr -> Bool Source # (>) :: Expr -> Expr -> Bool Source # (>=) :: Expr -> Expr -> Bool Source # max :: Expr -> Expr -> Expr Source # min :: Expr -> Expr -> Expr Source #
Real Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods toRational :: Expr -> Rational Source #
Show Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods showsPrec :: Int -> Expr -> ShowS Source # show :: Expr -> String Source # showList :: [Expr] -> ShowS Source #
Semigroup Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods (<>) :: Expr -> Expr -> Expr Source # sconcat :: NonEmpty Expr -> Expr Source # stimes :: Integral b => b -> Expr -> Expr Source #
Monoid Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods mempty :: Expr Source # mappend :: Expr -> Expr -> Expr Source # mconcat :: [Expr] -> Expr Source #
FromExpr Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods fromExpr :: Expr -> Expr Source #

class FromExpr a where Source #

Conversion from Expr to other types

Methods

fromExpr :: Expr -> a Source #

Instances

FromExpr Expr Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods fromExpr :: Expr -> Expr Source #
(Show a, FromExpr b) => FromExpr (a -> b) Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods fromExpr :: Expr -> a -> b Source #

var :: String -> Expr Source #

A variable with the given name

fun :: FromExpr a => String -> a Source #

A generic, overloaded, function variable

data Associativity Source #

This data type specifies the associativity of operators: left, right or none.

Constructors

InfixL
Infix
InfixR

Instances

Eq Associativity Source #
Instance details Defined in Debug.SimpleReflect.Expr Methods (==) :: Associativity -> Associativity -> Bool Source # (/=) :: Associativity -> Associativity -> Bool Source #

op :: Associativity -> Int -> String -> Expr -> Expr -> Expr Source #

An infix operator with the given associativity, precedence and name

Evaluating

expr :: Expr -> Expr Source #

Force something to be an expression.

reduce :: Expr -> Expr Source #

Reduce (evaluate) an expression once.

For example reduce (1 + 2 + 3 + 4) == 3 + 3 + 4

reduction :: Expr -> [Expr] Source #

Show all reduction steps when evaluating an expression.